The DOpus5 ARexx Port.
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The Directory Opus 5 ARexx port name is  DOPUS.x , where  x  is the
invocation count of the program (the first and most often used one is
 DOPUS.1 ). Since ARexx scripts launched from Directory Opus do not
automatically inherit the command address, you may want to use the  {Qp} 
command sequence in Opus functions (this is described elsewhere in the
printed manual).